94 RHYNCHOPHORA. 
4. Dioptrophorus prolixus, sp. n. (Tab. VI. fig. 21, 2 .) 
Elongate, black, the antenne and the tips of the tarsi obscurely rufescent ; covered with a greyish incrustation 
and with scattered minute narrow ochreous scales, the legs with short hairs. Rostrum about as long as 
the prothorax, coarsely, but shallowly punctate ; antenne inserted at about one-third from the apex of 
the rostrum. Prothorax longer than broad, widest at the middle, narrowing anteriorly and slightly so 
posteriorly, strongly constricted before the apex, the hind angles subrectangular; the surface uneven, 
coarsely, irregularly punctate, and with six prominent tubercles—two at the apex, two on the middle of 
the disc, and one on each side before the middle. Elytra more than twice the length of the prothorax, 
flattened on the disc for fully three-fourths of their length and then abruptly declivous to the apex ; 
eoarsely seriate-punctate, and with rows of oblong or rounded tubercles extending from the base to the 
apical declivity, the last two on each elytron being large and very prominent, those on the apical portion 
cariniform and inconspicuous. 
Length 7, breadth 3 millim. (2.) 
Hab. GuaTEMALA, Totonicapam between 8500 and 10,500 feet (Champion). 
Differs from its allies in its larger size and much more elongate shape, the series of 
conspicuous elevations on the elytra culminating in four very prominent rounded 
tubercles before the abruptly sloping apical declivity. ‘The single specimen obtained 
appears to be a female; and, if so, the antenne are inserted a little nearer the apex 
than usual. 
5. Dioptrophorus sharpi. (Tab. VI. figg. 22, ¢ ; 23, 2.) 
Dioptrophorus sharpi, Faust, Deutsche ent. Zeit. 1892, pp. 36, 58°. 
Hab. Guatemata 1, Totonicapam 8500 to 10,500 feet (Champion). 
Found in profusion under the bark of pines at Totonicapam. This insect is very 
like D. simplex, but differs from it in having the prothorax more uneven on the disc, 
and the sides straighter behind, the posterior angles being subrectangular. Length 
4-54 millim. 
6. Dioptrophorus fahrei. (Tab. VI. fige. 24, 24a, 9.) 
Dioptrophorus fahrei, Faust, Deutsche ent. Zeit. 1892, pp. 86, 59°. 
Hab, GuatemAta}, Totonicapam 8500 to 10,500 feet (Champion). 
If I have identified it correctly, three specimens only of this species are contained in 
our collection. They are narrower than D. sharpi, with the prothorax a little longer, 
more uneven, and constricted nearer the apex, so as to appear wider anteriorly, and 
the elytral elevations more elongate. Length (3 2?) 42-5 millim. 
§ 2. Eye-facets flattened. 
7. Dioptrophorus verruciger, sp. n. (Tab. VI. figg. 25, 25 a.) 
Elongate-ovate, robust, black, coated in great part with an earthy incrustation ; the setosity extremely short. 
Rostrum very stout, shorter than the prothorax, constricted at the base, coarsely, closely punctate, and 
obsoletely carinate down the middle; eyes comparatively large, not very prominent, the facets flattened. 
